Mercedes-Benz Vehicle Models Mercedes GLK 2008-2015 Torque Specifications
Mercedes-Benz Vehicle Models Mercedes GLK 2008-2015

Mercedes-Benz Vehicle Models Mercedes GLK 2008-2015 Torque Specifications

Complete Mercedes-Benz Vehicle Models Mercedes GLK 2008-2015 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide

ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

2.1l I4 Engine

Torque specifications for 2.1L-I4 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures a secure seal between the cylinder head and engine block, preventing oil leaks and maintaining compression.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M14 x 2.0
Torque Specification
64 ft-lbs (87 N·m)
Important Notes
Correct torque value secures the main bearings, ensuring proper engine oil pressure and bearing longevity.

Connecting Rods and Pistons

1

Connecting Rod Nuts

M10 x 1.0
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Proper torque ensures the connecting rods are securely fastened to the crankshaft, preventing engine damage and maintaining proper piston movement.

Camshaft and Valvetrain

1

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
42 ft-lbs (57 N·m)
Important Notes
Correct torque secures the camshaft sprocket, maintaining proper timing and engine performance.
2

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Correct torque secures the rocker arms and shafts, maintaining proper valve train operation and engine performance.

Crankshaft and Timing System

1

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Proper torque ensures the crankshaft pulley is securely fastened, preventing engine vibration and damage.
2

Timing Belt/Chain Tensioner Bolt

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures the timing belt or chain is properly tensioned, maintaining engine timing and preventing damage.

Engine Accessories

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Correct torque prevents over-tightening, which can damage the valve cover gasket and cause oil leaks.
2

Oil Pan Bolts

M10 x 1.0
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Correct torque secures the oil pan, preventing oil leaks and maintaining engine oil pressure.

Fuel and Ignition System

1

Spark Plugs

-
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Proper torque ensures the spark plugs are securely seated, preventing engine misfires and maintaining proper combustion.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Proper torque prevents over-tightening, which can damage the water pump or its mounting surface.

Engine Mounts and Exhaust System

1

Engine Mounting Bolts

M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Engine mounting bolts are critical for securing the engine to the vehicle's frame. A specific torque value is essential to prevent engine vibration and damage. *Estimated value, consult the vehicle manufacturer's specifications for specific torque values.*
2

Exhaust Manifold Heat Shield Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
These bolts secure the heat shield, preventing damage from heat and exhaust gases, and ensuring proper exhaust system operation. *Estimated value, consult the vehicle manufacturer's specifications for specific torque values.*

3.0l Engine

Torque specifications for 3.0L Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Engine Block to Transmission Mounting Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M16 x 1.5
Torque Specification
64 ft-lbs (87 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Specification
81 ft-lbs (110 N·m)

Valvetrain and Timing System

1

Valve Cover Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
3

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
42 ft-lbs (57 N·m)

Intake and Exhaust System

1

Intake Manifold Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Exhaust Manifold/Headers Bolts

M14 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Cooling System

1

Water Pump Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)

Engine Oil System

1

Oil Pan Bolts

M12 x 1.5
Torque Specification
13 ft-lbs (18 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
23 ft-lbs (31 N·m)

3.0l V6 Engine

Torque specifications for 3.0L-V6 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Engine Block to Transmission Mounting Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M16 x 1.5
Torque Specification
64 ft-lbs (87 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Specification
81 ft-lbs (110 N·m)

Valvetrain and Timing System

1

Valve Cover Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
3

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
42 ft-lbs (57 N·m)

Intake and Exhaust System

1

Intake Manifold Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Exhaust Manifold/Headers Bolts

M14 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Cooling System

1

Water Pump Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)

Engine Oil System

1

Oil Pan Bolts

M12 x 1.5
Torque Specification
13 ft-lbs (18 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
23 ft-lbs (31 N·m)

3.5l Engine

Torque specifications for 3.5L Engine

Cylinder Head and Valvetrain

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
11 ft-lbs (15 N·m)

Engine Block and Crankshaft

1

Main Bearing Bolts

M16 x 2.0
Torque Specification
64 ft-lbs (87 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 2.5
Torque Specification
81 ft-lbs (110 N·m)

Camshaft and Timing System

1

Camshaft Sprocket Bolt

M14 x 2.0
Torque Specification
42 ft-lbs (57 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Engine Accessories

1

Oil Pump Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value, actual value may vary depending on the engine design and manufacturer's recommendations.
2

Water Pump Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)

Engine Mounting and Exhaust System

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value, actual value may vary depending on the engine design and manufacturer's recommendations.
2

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Intake and Fuel System

1

Intake Manifold Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
23 ft-lbs (31 N·m)

3.5l V6 Engine

Torque specifications for 3.5L-V6 Engine

Cylinder Head and Valvetrain

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
11 ft-lbs (15 N·m)

Engine Block and Crankshaft

1

Main Bearing Bolts

M16 x 2.0
Torque Specification
64 ft-lbs (87 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 2.5
Torque Specification
81 ft-lbs (110 N·m)

Camshaft and Timing System

1

Camshaft Sprocket Bolt

M14 x 2.0
Torque Specification
42 ft-lbs (57 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Engine Accessories

1

Oil Pump Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value, actual value may vary depending on the engine design and manufacturer's recommendations.
2

Water Pump Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)

Engine Mounting and Exhaust System

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value, actual value may vary depending on the engine design and manufacturer's recommendations.
2

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Intake and Fuel System

1

Intake Manifold Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
23 ft-lbs (31 N·m)

7g Tronic Transmission

Torque specifications for 7g Tronic Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)

Transmission Oil System

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
2

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
25 ft-lbs (34 N·m)

Torque Converter

1

Torque Converter Bolts

M14 x 1.5
Torque Specification
43 ft-lbs (59 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Cooler System

1

Transmission Cooler Line Fittings

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Control System

1

Transmission Solenoid Pack Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards.
2

Transmission Valve Body Bolts

M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on industry standards.

Body

Torque specifications for Body

Suspension And Steering

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure proper torque to maintain suspension alignment and stability.
2

Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Ensure proper torque to maintain suspension geometry and alignment.
3

Steering Gear/Rack Bolts

M12 x 1.25
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure proper torque to maintain precise steering control and stability.

Body Mounts

1

Body Mount Bolts (e.g., engine mounts, transmission mounts)

M10 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated torque value. Consult the vehicle's service manual or manufacturer's recommendations for accurate specifications.

Doors And Hoods

1

Door Hinge Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated torque value. Consult the vehicle's service manual or manufacturer's recommendations for accurate specifications.
2

Hood and Trunk Lid Hinge Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated torque value. Consult the vehicle's service manual or manufacturer's recommendations for accurate specifications.

Bumpers And Panels

1

Bumper Mounting Bolts

M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated torque value. Consult the vehicle's service manual or manufacturer's recommendations for accurate specifications.
2

Fender and Quarter Panel Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated torque value. Consult the vehicle's service manual or manufacturer's recommendations for accurate specifications.

Brakes

Torque specifications for Brakes

Brake Caliper Assembly

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)

Brake Rotor and Drum Assembly

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
43 ft-lbs (59 N·m)
2

Brake Rotor Bolts (if applicable)

M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Consult vehicle manufacturer's repair manual for accurate specification.

Brake Master Cylinder and Booster Assembly

1

Brake Master Cylinder Mounting Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Consult vehicle manufacturer's repair manual for accurate specification.
2

Brake Booster Mounting Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Consult vehicle manufacturer's repair manual for accurate specification.

ABS Sensor Assembly

1

ABS Sensor Bolts (if equipped)

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Consult vehicle manufacturer's repair manual for accurate specification.

Drivetrain

Torque specifications for Drivetrain

Engine and Transmission Mounting

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.
2

Transmission Crossmember Bolts

M16 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on general industry standards.

Flywheel and Crankshaft

1

Flywheel Bolts

M12 x 1.5
Torque Specification
43 ft-lbs (59 N·m)
2

Main Bearing Bolts

M14 x 1.5
Torque Specification
64 ft-lbs (87 N·m)
3

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
81 ft-lbs (110 N·m)

Transmission and Transfer Case

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
2

Transmission Oil Pan Bolts

M10 x 1.5
Torque Specification
13 ft-lbs (18 N·m)
3

Transfer Case Mounting Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.

Drive Axle and Half Shaft

1

Drive Axle/Half Shaft Bolts

M18 x 1.5
Torque Specification
147 ft-lbs (200 N·m)
2

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
159 ft-lbs (216 N·m)

Differential and Propeller Shaft

1

Differential Cover Bolts

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on general industry standards.
2

Differential Drain/Fill Plug

M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
3

Propeller/Drive Shaft Bolts

M16 x 1.5
Torque Specification
52 ft-lbs (70 N·m)

Electrical

Torque specifications for Electrical

Alternator and Starter Motor

1

Alternator Mounting Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Starter Motor Mounting Bolts

M14 x 1.5
Torque Specification
27 ft-lbs (37 N·m)

Battery and Electrical Connectors

1

Battery Terminal Nuts

M10 x 1.5
Torque Specification
5 ft-lbs (7 N·m)
2

Ignition Coil Mounting Bolts

M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 12 ft-lbs (16 N·m)
Important Notes
Estimated torque values based on general guidelines.
3

Fuel Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Estimated torque values based on general guidelines.
4

A/C Compressor Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Estimated torque values based on general guidelines.
5

Power Steering Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Estimated torque values based on general guidelines.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust Manifold Headers

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure a leak-free connection for accurate emissions sensor readings.
2

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure a secure connection to prevent leaks and maintain emissions performance.

Emissions Control Components

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the EGR valve is securely mounted for proper function.
2

Oxygen Sensor (O2 Sensor) Mounting Nut

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on similar components. Ensure a proper seal for accurate sensor readings.
3

Exhaust Gas Temperature Sensor Bolt

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar components. Ensure the sensor is securely mounted for accurate readings.
4

DPF (Diesel Particulate Filter) Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar components. Ensure the DPF is securely installed for proper function.
5

Catalytic Converter Heat Shield Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the heat shield remains securely in place.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Critical to maintain a proper seal and prevent exhaust leaks.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensures a secure connection and prevents leaks.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Prevents leaks and ensures proper catalytic converter function.

Muffler

1

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures a secure fit and reduces noise levels.

Exhaust Hangers

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensures the exhaust system remains stable.

Oxygen Sensors

1

Oxygen Sensor Bolts

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value. Ensures a secure fit and prevents leaks.

Heat Shields

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Ensures shields remain securely in place.

Exhaust Flanges

1

Exhaust Flange Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Ensures a tight seal and prevents leaks.

Fuel

Torque specifications for Fuel

Fuel Rail and Injector System

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Fuel Injector Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)

Fuel Pump and Filter System

1

Fuel Pump Mounting Bolts

M12 x 1.75
Torque Specification
7 ft-lbs (10 N·m)
2

Fuel Filter Bolt/Nut

M14 x 2
Torque Specification
14 ft-lbs (19 N·m)

Fuel Tank and Filler Neck System

1

Fuel Tank Strap Bolts

M16 x 2
Torque Specification
26 ft-lbs (35 N·m)
2

Fuel Filler Neck Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)

Fuel Pressure Regulator and Injector Hold Down System

1

Fuel Pressure Regulator Mounting Bolts

M12 x 1.75
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 12 ft-lbs (16 N·m)
Important Notes
Estimated values based on general industry standards. Consult the vehicle manufacturer's repair manual for specific recommendations.
2

Fuel Injector Hold-Down Clamp Bolts

M10 x 1.5
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Estimated values based on general industry standards. Consult the vehicle manufacturer's repair manual for specific recommendations.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the compressor is properly aligned before tightening bolts.

Ac Lines

1

A/C Line Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Use a backup wrench to prevent twisting the refrigerant lines.

Evaporator

1

Evaporator Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on typical M6 bolt torque specifications.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on typical M6 bolt torque specifications.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the O-rings are properly seated before tightening.

Control Panel

1

HVAC Control Panel Mounting Screws

M4 x 0.7
Torque Specification
2 ft-lbs (3 N·m)
Important Notes
Use a hand torque driver to avoid over-tightening.

Condenser

1

Condenser Mounting Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the condenser is properly aligned with the radiator before tightening.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M10 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure the strut is properly aligned before tightening.
2

Control Arm Bolts

M12 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Use a torque sequence to ensure even clamping force.
3

Ball Joint Nut

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the ball joint is properly seated before tightening.
4

Tie Rod End Nut

M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the tie rod end is properly aligned before tightening.
5

Sway Bar Link Nut

M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the sway bar link is properly seated before tightening.
6

Steering Gear/Rack Bolts

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Use a torque sequence to ensure even clamping force.

Rear Suspension

1

Rear Shock Absorber Mounting Bolts

M10 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure the shock absorber is properly aligned before tightening.
2

Rear Sway Bar Mounting Bolts

M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the sway bar is properly seated before tightening.
3

Rear Hub Carrier Bolts

M14 x 1.5
Torque Specification
147 ft-lbs (200 N·m)
Important Notes
Use a torque sequence to ensure even clamping force.

Wheels

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
96 ft-lbs (130 N·m)
Important Notes
Always use a star pattern to tighten lug nuts.

Subframe

1

Subframe Mounting Bolts

M12 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Use a torque sequence to ensure even clamping force.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What torque wrench should I use for my 2013 Mercedes GLK?

Use a torque wrench that meets or exceeds the specifications outlined in the Mercedes service manual for your specific model year and engine type.

Q2

What are the torque specifications for the lug nuts on my 2010 Mercedes GLK?

The torque specification for the lug nuts on a 2010 Mercedes GLK IS 120 Nm (88 ft-lbs).

Q3

Can I use a torque wrench with a 1/2-inch drive to tighten the spark plugs on my 2015 Mercedes GLK?

No, a 1/2-inch drive torque wrench IS too large for the spark plugs on a 2015 Mercedes GLK. Use a torque wrench with a 3/8-inch drive and a spark plug socket.

Q4

What IS the recommended torque for the oil drain plug on my 2012 Mercedes GLK?

The recommended torque for the oil drain plug on a 2012 Mercedes GLK IS 25 Nm (18 ft-lbs).

Q5

How do I properly torque the bolts on my 2008 Mercedes GLK brake calipers?

Refer to the Mercedes service manual for the specific torque specifications for your model year and brake caliper type. Use a torque wrench to apply the correct amount of torque in a star pattern to ensure even tightening.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the glk.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures

Torque Specifications for Engine Components

Detailed torque values for cylinder head bolts, camshaft bolts, oil pan bolts, and other engine components on the glk.

  • Locate the specific component you need to tighten.
  • Refer to the torque specification table for the corresponding value.
  • Use the digital torque wrench to tighten the fastener to the specified torque.
  • Double-check the torque value to ensure accuracy.
View full procedure

Torque Specifications for Suspension Components

Torque values for control arm bolts, sway bar links, strut bolts, and other suspension components on the glk.

  • Identify the suspension component you need to tighten.
  • Find the corresponding torque specification in the service manual.
  • Use the torque wrench to tighten the fastener to the specified value.
  • Inspect the suspension component for proper alignment and security.
View full procedure

Torque Specifications for Brake Components

Torque values for brake calipers, rotors, pads, and other brake components on the glk.

  • Locate the brake component you need to tighten.
  • Refer to the service manual for the corresponding torque specification.
  • Use the torque wrench to tighten the fastener to the specified value.
  • Verify the brake component IS properly secured and functioning.
View full procedure
Technical Service Bulletins

Technical Service Bulletin: Incorrect Torque Specifications for Driveshaft Bolts

2011-05-15

This bulletin addresses an error in the torque specifications for glk driveshaft bolts. The original specifications were incorrect and could lead to driveshaft failure.

2008-2011 glk

Resolution: Update the torque specifications for the driveshaft bolts to the following values: M10 bolts: 40 Nm (30 lb-ft); M12 bolts: 80 Nm (60 lb-ft).

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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